Primera Division de Chile

As of the 2015–16 season, 16 teams compete in the league, which is split into Apertura and Clausura tournaments.
Currently, the two teams with the worst scores in the complete season (including Apertura and Clausura, but excluding the play-off stage), are relegated to Primera B, and replaced by the Champions and Runners-up of this Division. There is also a Relegation Playoff Tournament, played in a home-and-away basis by the teams that finish 15º and 16° in the First Division against the teams that finish 3° and 4° in the Primera B.
The champions of the Apertura and Clausura of each season are immediately qualified to Copa Libertadores for the next year. The third Chilean spot in that tournament is used by the team with the highest score in the Clausura regular phase (that is, excluding the play-offs).